So much confusion on the proper amt to feed my puppy. She was a rescue and is approximately 12-15 weeks, currently weighs 15 lbs. (added 1.8 lbs in the week since her check-up.) I am feeding her a mix of Science Diet puppy and large breed adult kibble, per the vets instruction. We are giving her 1 cup twice a day (this is more than the vet recommended) and she acts like she is starving! I've never had a large breed puppy; suggestions/recommendations please.